Cramp or baby?

Betty
So I have been cramping a lot lately around my pubic region. I am 15.5 weeks. No spotting or anything. Any way, I noticed sometimes when I am in certain positions I feel sudden pressure and I have to reposition myself. For example, I was leaning over the dining room table when cleaning & I felt a sudden jolt on my right side pelvic area. Almost like a crampish feeling but it was a sudden pressure. I haven't felt baby yet so I was thinking maybe that's him? Or am I wishfully thinking? What do you guys think?